github.com/minio/minio@v0.0.0-20240328213742-3f72439b8a27/cmd/grid.go (about)

     1  // Copyright (c) 2015-2023 MinIO, Inc.
     2  //
     3  // This file is part of MinIO Object Storage stack
     4  //
     5  // This program is free software: you can redistribute it and/or modify
     6  // it under the terms of the GNU Affero General Public License as published by
     7  // the Free Software Foundation, either version 3 of the License, or
     8  // (at your option) any later version.
     9  //
    10  // This program is distributed in the hope that it will be useful
    11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13  // GNU Affero General Public License for more details.
    14  //
    15  // You should have received a copy of the GNU Affero General Public License
    16  // along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17  
    18  package cmd
    19  
    20  import (
    21  	"context"
    22  	"crypto/tls"
    23  	"sync/atomic"
    24  
    25  	"github.com/minio/minio/internal/fips"
    26  	"github.com/minio/minio/internal/grid"
    27  	xhttp "github.com/minio/minio/internal/http"
    28  	"github.com/minio/minio/internal/rest"
    29  )
    30  
    31  // globalGrid is the global grid manager.
    32  var globalGrid atomic.Pointer[grid.Manager]
    33  
    34  // globalGridStart is a channel that will block startup of grid connections until closed.
    35  var globalGridStart = make(chan struct{})
    36  
    37  func initGlobalGrid(ctx context.Context, eps EndpointServerPools) error {
    38  	hosts, local := eps.GridHosts()
    39  	g, err := grid.NewManager(ctx, grid.ManagerOptions{
    40  		Dialer:       grid.ContextDialer(xhttp.DialContextWithLookupHost(globalDNSCache.LookupHost, xhttp.NewInternodeDialContext(rest.DefaultTimeout, globalTCPOptions))),
    41  		Local:        local,
    42  		Hosts:        hosts,
    43  		AddAuth:      newCachedAuthToken(),
    44  		AuthRequest:  storageServerRequestValidate,
    45  		BlockConnect: globalGridStart,
    46  		TLSConfig: &tls.Config{
    47  			RootCAs:          globalRootCAs,
    48  			CipherSuites:     fips.TLSCiphers(),
    49  			CurvePreferences: fips.TLSCurveIDs(),
    50  		},
    51  		// Record incoming and outgoing bytes.
    52  		Incoming: globalConnStats.incInternodeInputBytes,
    53  		Outgoing: globalConnStats.incInternodeOutputBytes,
    54  		TraceTo:  globalTrace,
    55  	})
    56  	if err != nil {
    57  		return err
    58  	}
    59  	globalGrid.Store(g)
    60  	return nil
    61  }